Search a number
-
+
12808825838 = 236971732327
BaseRepresentation
bin10111110110111011…
…10010101111101110
31020001200001202210222
423323131302233232
5202213024411323
65515001331342
7632262136364
oct137335625756
936050052728
1012808825838
115483280486
122595796b52
1312918b79b3
14897203634
154ee78c9c8
hex2fb772bee

12808825838 has 8 divisors (see below), whose sum is σ = 19218446832. Its totient is φ = 6402676896.

The previous prime is 12808825807. The next prime is 12808825859. The reversal of 12808825838 is 83852880821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12808825838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858770 + ... + 873557.

It is an arithmetic number, because the mean of its divisors is an integer number (2402305854).

Almost surely, 212808825838 is an apocalyptic number.

12808825838 is a deficient number, since it is larger than the sum of its proper divisors (6409620994).

12808825838 is a wasteful number, since it uses less digits than its factorization.

12808825838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736026.

The product of its (nonzero) digits is 1966080, while the sum is 53.

The spelling of 12808825838 in words is "twelve billion, eight hundred eight million, eight hundred twenty-five thousand, eight hundred thirty-eight".

Divisors: 1 2 3697 7394 1732327 3464654 6404412919 12808825838